CVE-2026-97056 SigNoz before 0.143.0 Insufficient Session Expiration Authentication Bypass
Attackers with stolen session tokens retain access after password resets or user deletion if opaque session tokenizers are enabled, bypassing account termination controls.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-97056?
CVE-2026-97056 is a high-severity authentication bypass vulnerability in signoz, published on 24 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
SigNoz versions from v0.98.0 up to (but not including) v0.143.0, when configured to use the opaque session tokenizer (which was not the default before v0.143.0), do not revoke a user's existing login sessions when the user's password is reset with a reset token (UpdatePasswordByResetPasswordToken, reachable via POST /api/v2/factor_password/reset) or when the user is deleted (DeleteUser, reachable via DELETE /api/v2/users/{id}). Neither code path calls the tokenizer's DeleteTokensByUserID, so cached tokens and identities are left in place. An attacker who already holds a session token for the account — for example from a stolen browser session or from a user being offboarded — retains the account's full access, up to administrator, after a password reset until the token reaches its configured maximum lifetime (30 days by default), and after user deletion until the token next rotates (30 minutes by default). This defeats password reset and user deletion as a means of terminating access. The issue is fixed in v0.143.0.
Weakness: CWE-613
Which versions are affected by CVE-2026-97056?
How do I fix CVE-2026-97056?
No fix has been published for CVE-2026-97056 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-97056 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-97056 exists.
Sources
Also known as GHSA-r949-5536-p6gg, GHSA-xrgp-3fq4-xg83.